a dumb 2 step equation i always mess up. help?

[xXphotographyXx]

hiii, i have a question about this question i always mess up on. i think i got it but im not sure. i went back to look at problems a got wrong a while ago, and this is one of them. here it is:

if three times jills bowling score is increased by 100 less than twice her score, the result is 900. find her score

responces are greatly appriciated. thaaaannkkksss!

[dragonwench]

if three times jills bowling score is increased by 100 less than twice her score, the result is 900. find her score

Ok-

So the first thing you need to figure out is "What are you solving for?" =x

and then what do you already know?

so what does X represent?

and you know What is increased by ....

what amount ? .....

and what (if any) other information is already given to you?

[stapel_eliz]

i think i got it but im not sure.

Plug your solution back into the original exercise, and see if it works. If it does, then you "got it"!

(Otherwise, please post your steps and solution, so we can check what you've done. Thank you!)

[xXphotographyXx]

alright. thanks both of you:]]

let x= jills score
3x+2x-100=900
5x-100=900
5x=1000
x=200


CHECK(hehe,i forgot this step):
3(200)+2(200)-100=900
600+400-100=900



i got it!
thanks for your help!